A system and method for diagnosing and treating undesired internal conditions and structures, such as occluded vessels or aberrant histological regions. Diagnosis is effected by means of doppler analysis of laser light directed to the effected site from an inserted laser-containing unit, and treatment...http://www.google.com.au/patents/US4538613?utm_source=gb-gplus-sharePatent US4538613 - Coherent beam coupler system
